Python - 包含字符串和整数的拆分列表
问题描述
myList = [ 4,'a', 'b', 'c', 1 'd', 3]
如何将这个列表分成两个列表，一个包含字符串，另一个包含 elegant/pythonic 方式的整数?
how to split this list into two list that one contains strings and other contains integers in elegant/pythonic way?
输出:
myStrList = [ 'a', 'b', 'c', 'd' ]
myIntList = [ 4, 1, 3 ]
注意:没有实现这样的列表，只是考虑如何为这样的问题找到一个优雅的答案(有吗?).
NOTE: didn't implemented such a list, just thought about how to find an elegant answer (is there any?) to such a problem.
解决方案
正如其他人在评论中提到的那样，您应该真正开始考虑如何摆脱包含非同质数据的列表.但是，如果这真的 不能 完成，我会使用默认字典:
As others have mentioned in the comments, you should really start thinking about how you can get rid of the list which holds in-homogeneous data in the first place. However, if that really can't be done, I'd use a defaultdict:
from collections import defaultdict
d = defaultdict(list)
for x in myList:
d[type(x)].append(x)
print d[int]
print d[str]
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